rspec的 - 爲什麼be_valid不行

我試圖做到這一點：rspec的 - 爲什麼be_valid不行

describe "should fail on create if the name is shorter than 5 characters" do 
    group = Factory.build(:group, :name => "a") 
    group.should be_invalid 
    group.should have(1).error_on(:name) 
    end

，但我得到了以下錯誤：

/spec/models/group_model_spec.rb:22: undefined local variable or method `be_valid' for #<Class:0x105d13ed0> (NameError) 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:132:in `module_eval' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:132:in `subclass' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:119:in `describe' 
    from /xxxx/spec/models/group_model_spec.rb:15 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:132:in `module_eval' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:132:in `subclass' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:119:in `describe' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/extensions/object.rb:6:in `describe' 
    from /Users/bhellman/Sites/companyline/spec/models/group_model_spec.rb:3 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/configuration.rb:386:in `load' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/configuration.rb:386:in `load_spec_files' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/configuration.rb:386:in `map' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/configuration.rb:386:in `load_spec_files' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/command_line.rb:18:in `run' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/runner.rb:55:in `run_in_process' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/runner.rb:46:in `run' 
    from /Library/Ruby/Gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/runner.rb:10:in `autorun' 
    from /usr/bin/rspec:19

想法？由於

來源

2011-03-21 AnApprentice

你，包括你的spec_helper文件rspec的？ – 2011-03-21 23:58:54

當我忘記打開該塊時，發生這種情況：「應該等待」（不做） – wesgarrison 2013-05-24 15:00:16

這是正確的語法：

group.should_not be_valid

來源

2011-03-21 22:59:45 Spyros

be_invalid應該可用但通過 – 2011-03-21 23:58:27

同樣的問題「未定義的局部變量或方法be_valid爲＃（NameError）「 – AnApprentice 2011-03-22 00:01:36

你在規範中是否有」require'spec_helper'「？ – Spyros 2011-03-22 00:03:04

rspec的 - 爲什麼be_valid不行

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